cvar_t r_ambient = {0, "r_ambient", "0"};
cvar_t r_drawportals = {0, "r_drawportals", "0"};
-cvar_t r_testvis = {0, "r_testvis", "0"};
-cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "0"};
+cvar_t r_lockpvs = {0, "r_testpvs", "0"};
+cvar_t r_lockvisibility = {0, "r_lockvisibility", "0"};
+cvar_t r_useportalculling = {0, "r_useportalculling", "0"};
cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0"};
// if possible find the leaf the view origin is in
viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_vieworigin) : NULL;
// if possible fetch the visible cluster bits
- if (model->brush.FatPVS)
+ if (!r_lockpvs.integer && model->brush.FatPVS)
model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
- // clear the visible surface and leaf flags arrays
- memset(r_worldsurfacevisible, 0, model->num_surfaces);
- memset(r_worldleafvisible, 0, model->brush.num_leafs);
-
- // if the user prefers surfaceworldnode (testing?) or the viewleaf could
- // not be found, or the viewleaf is not part of the visible world
- // (floating around in the void), use the pvs method
- if (r_surfaceworldnode.integer || !viewleaf || viewleaf->clusterindex < 0)
+ if (!r_lockvisibility.integer)
{
- // pvs method:
- // similar to quake's RecursiveWorldNode but without cache misses
- for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
+ // clear the visible surface and leaf flags arrays
+ memset(r_worldsurfacevisible, 0, model->num_surfaces);
+ memset(r_worldleafvisible, 0, model->brush.num_leafs);
+
+ // if floating around in the void (no pvs data available, and no
+ // portals available), simply use all on-screen leafs.
+ if (!viewleaf || viewleaf->clusterindex < 0)
{
- // if leaf is in current pvs and on the screen, mark its surfaces
- if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
+ // no visibility method: (used when floating around in the void)
+ // simply cull each leaf to the frustum (view pyramid)
+ // similar to quake's RecursiveWorldNode but without cache misses
+ for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
{
- renderstats.world_leafs++;
- r_worldleafvisible[j] = true;
- if (leaf->numleafsurfaces)
- for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
- r_worldsurfacevisible[*mark] = true;
+ // if leaf is in current pvs and on the screen, mark its surfaces
+ if (!R_CullBox(leaf->mins, leaf->maxs))
+ {
+ renderstats.world_leafs++;
+ r_worldleafvisible[j] = true;
+ if (leaf->numleafsurfaces)
+ for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
+ r_worldsurfacevisible[*mark] = true;
+ }
}
}
- }
- else
- {
- int leafstackpos;
- mportal_t *p;
- mleaf_t *leafstack[8192];
- // portal method:
- // follows portals leading outward from viewleaf, does not venture
- // offscreen or into leafs that are not visible, faster than Quake's
- // RecursiveWorldNode and vastly better in unvised maps, often culls a
- // lot of surface that pvs alone would miss
- leafstack[0] = viewleaf;
- leafstackpos = 1;
- while (leafstackpos)
+ // if the user prefers to disable portal culling (testing?), simply
+ // use all on-screen leafs that are in the pvs.
+ else if (!r_useportalculling.integer)
+ {
+ // pvs method:
+ // simply check if each leaf is in the Potentially Visible Set,
+ // and cull to frustum (view pyramid)
+ // similar to quake's RecursiveWorldNode but without cache misses
+ for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
+ {
+ // if leaf is in current pvs and on the screen, mark its surfaces
+ if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
+ {
+ renderstats.world_leafs++;
+ r_worldleafvisible[j] = true;
+ if (leaf->numleafsurfaces)
+ for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
+ r_worldsurfacevisible[*mark] = true;
+ }
+ }
+ }
+ // otherwise use a recursive portal flow, culling each portal to
+ // frustum and checking if the leaf the portal leads to is in the pvs
+ else
{
- renderstats.world_leafs++;
- leaf = leafstack[--leafstackpos];
- r_worldleafvisible[leaf - model->brush.data_leafs] = true;
- // mark any surfaces bounding this leaf
- if (leaf->numleafsurfaces)
- for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
- r_worldsurfacevisible[*mark] = true;
- // follow portals into other leafs
- // the checks are:
- // if viewer is behind portal (portal faces outward into the scene)
- // and the portal polygon's bounding box is on the screen
- // and the leaf has not been visited yet
- // and the leaf is visible in the pvs
- // (the first two checks won't cause as many cache misses as the leaf checks)
- for (p = leaf->portals;p;p = p->next)
+ int leafstackpos;
+ mportal_t *p;
+ mleaf_t *leafstack[8192];
+ // simple-frustum portal method:
+ // follows portals leading outward from viewleaf, does not venture
+ // offscreen or into leafs that are not visible, faster than
+ // Quake's RecursiveWorldNode and vastly better in unvised maps,
+ // often culls some surfaces that pvs alone would miss
+ // (such as a room in pvs that is hidden behind a wall, but the
+ // passage leading to the room is off-screen)
+ leafstack[0] = viewleaf;
+ leafstackpos = 1;
+ while (leafstackpos)
{
- renderstats.world_portals++;
- if (DotProduct(r_vieworigin, p->plane.normal) < (p->plane.dist + 1) && !R_CullBox(p->mins, p->maxs) && !r_worldleafvisible[p->past - model->brush.data_leafs] && CHECKPVSBIT(r_pvsbits, p->past->clusterindex))
- leafstack[leafstackpos++] = p->past;
+ renderstats.world_leafs++;
+ leaf = leafstack[--leafstackpos];
+ r_worldleafvisible[leaf - model->brush.data_leafs] = true;
+ // mark any surfaces bounding this leaf
+ if (leaf->numleafsurfaces)
+ for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
+ r_worldsurfacevisible[*mark] = true;
+ // follow portals into other leafs
+ // the checks are:
+ // if viewer is behind portal (portal faces outward into the scene)
+ // and the portal polygon's bounding box is on the screen
+ // and the leaf has not been visited yet
+ // and the leaf is visible in the pvs
+ // (the first two checks won't cause as many cache misses as the leaf checks)
+ for (p = leaf->portals;p;p = p->next)
+ {
+ renderstats.world_portals++;
+ if (DotProduct(r_vieworigin, p->plane.normal) < (p->plane.dist + 1) && !R_CullBox(p->mins, p->maxs) && !r_worldleafvisible[p->past - model->brush.data_leafs] && CHECKPVSBIT(r_pvsbits, p->past->clusterindex))
+ leafstack[leafstackpos++] = p->past;
+ }
}
}
}
Cvar_RegisterVariable(&r_ambient);
Cvar_RegisterVariable(&r_drawportals);
- Cvar_RegisterVariable(&r_testvis);
- Cvar_RegisterVariable(&r_surfaceworldnode);
+ Cvar_RegisterVariable(&r_lockpvs);
+ Cvar_RegisterVariable(&r_lockvisibility);
+ Cvar_RegisterVariable(&r_useportalculling);
Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonfactor);
Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
projects / xonotic / darkplaces.git / commitdiff